Vaporizer for hydrocarbon-engines.



E. P, LAMB. VAPOBIZBB. FOB HYDROCARBON ENGINES.

APPLICATION IILED AUG.30, 1909. 964,657.

Patented July 19, 1910.

i SHEETS-SHEET 1.

B. P. LAMB.

VAPORIZEB. FOP. HYDROGARBON ENGINES.

APPLICATION FILED umso. 19cm.

- Patented Jl11y19,1910.

:sanne-811252 a.

UNITED STATES PATENT OFFICE.

ELDEN P. LAMB, OF CAMDEN, MAINE, V.ASSIGN'OR TO CAMDEN ANCHOR-ROCXLAND MACHINE CO., OF RGCKLAND, MAINE.

VAPORIZER FOR HYDROCARBON-ENGINES.

Specification of Letters Patent.

Patented July 19, 1910.

Application led August 3G, 1909. Serial No. 115.239.'

5 and useful Improvements in Vaporizers for Hydrocarbon-Engines, ot which the following is a specification. Y

My present invention relates to improvements in charge forming devices or vaporizers for hydrocarbon engines, and coniprises the novel construction and arrangement and combinationof parts hereinafter described and particularly set. forth in the appended claims.

15. A vaporizer constructed in accordance with my invention is illustrated in theV accompanying drawings in which Y Figure 1 is a side elevation of the complete vaporizer; Fig. 2 is a ,central vertical section of the saine; Fig. 3 is a horizontal section on line 3 3 of .Fig 1; F ig. at is a horizontal section on line i of v1;

` Fig. 5 is a sectional detail of the loat controlled inlet valve; Fig. G is a detached detail view; Fig. T is a plan view; and Fig. S

is a section on line 8 8 of Fig. 3. Fig. 9I is a. detail view of the sight tube for indicating the hydrocarbon level. A

The main casing or body of the vaporizer 3o consists fa"castiiig 1 having inner and outer concentric walls l and l, and a bottom 2. The annular space 4 between the walls 1a and 1b constitutes the fuel chamber in which the hydrocarbon is maintained at the proper 35 ,level by a ioat 5 carried by a rocking lever' a 1G pivoted in an extension 7 of the chamber,

l'and having its end forked to engage 'the 'stem' of a valve 8 which controls the fuel 1nlet 9.' The valve stem is provided with col-j 40 lars 10 above and below the fork of the lever and the upper end of the stem is projected through a screw cap 11 and serves for priming purposes. From the fuel chamber 4 the hydrocarbon passes through passages 4* to a heating chamber or space 12 formed between two cones and 14. The upper cone 13 is preferably formed as an integral "part of the main casing, as shown, and carries, at its upper end, the atomizing opening for delivering the jet or spray of hydrocarbon into the combustion chamber in the form of vapor, the walls of this opening being preferably flared upwardly, as indicated at 15,'to coperatewith the needle. valve 16 which regulates the amount of hydrocarbon sion 20 and branch' or angle pipe 21 to the main exhaust pipe, (not shown).

From the construction thus described, it will be seen that'the hydrocarbon, in an exceedingly thin film or layer, is subjected to the heatof the hot Gases within the cone, the heat being readily transferred by the thin wall of the oone 14, and it will also be noticed that the heat is applied to the hydrocarbon prior to and right up to the point when it is discharged into the mixing chamber, whereby it is in condition to make an elicient mixture.

As fully explained in the specification of Letters Patent No. 776,406, granted Nov. 2:1, 1907, for an earlier invention of mine, it is desirable, to secure the best results, to provide for the admission of air in varying quantities, both above and below the needle valve or point of delivery of the hydrovide, in the present vaporizer, improved means foi' accomplishing this purpose.

The cover 22 of the vaporizer is of annu-v lar form, and from the edge of its central opening depends an annular wall 23, which forms, between the wall 1b and the central mixing chamber, an annular air chamber 24. This wall is provided with an upper row oh ports or openings Q5, and allower row of ports Q6, the former being above the level of the point of discharge of the hydrocarbon into the mixing chamber, and the latter below, and the two sets of openings being staggered in relation to each other, as clearly shown in Fig. 6. Y

lVithin the -annular wall' 23 is located a cylinder 27, which is provided with two sets of similarly staggered ports, and it will be readily seen that by oscillating the cylinder, either the upper or the lower rows of ports may be more or less brought into :divisant-nt.

The throttle is indicated at 2S, co1npri,--"ig simply a rotatable plate having opcni1|g:-; 2S" adapted to be brought more or less into :rzaintamrwwwdtmi........

. stationary plate 29, the throttle being operated through a tubular spindle 30 provided With a hand lever or other suitable operatin`g means, such as shown at 31, which may vbe provided with a spring pressed dog 32 :riding over. a notched quadrant 33 to hold the lever in Vany position to which it may be `iidiusted.

The cylinder which constitutes the air controllin valve, K as above described, is o erated gy means Aof a tubular spindle t ough which the spindle 34; passes, and which carries a hand lever 35 which has a spring pressed dog 36 engaging a notched quadrant carried by or connected with the hand lever 31 of the throttle, so that the air 'valve ma be independently adjusted ,to any desired egree, but, after adjustment, will be moved iii unison with the throttle.

The parts are so arranged that for starting purposes and with a partially closed throttle air is drawn through the lower openings to secure a rich mixture, while as the throttleA is more Widely opened the lower openings are closed and the' upper openings opened, which produces a less rich mixture aS described in' my prior patent hereinbefore referred to.

The needle valve passes through the tubular spindle 34 and is provided, on its upper end, with a thumb nut threaded upon a boss of the hand lever 35, so as to enable rotary :motion f the nut upon the boss to etl'ect vcrtical adjustment of the needle valve, the uut gbeing held against rotation independently of the boss by a spring pressed dog 361.

i I prefer t6 provide means by which either Warm or cold air or a mixture may be supplied. To effect this, I provide an inlet 37 to the air chamber for warm air, the air being taken from around the exhaust pipe (not shown) or any other source of heat, while l admit cold air through the lower air chamber 38, formed by 'the depending wall 3, the air passing u through suitable ports 39 into chamber 2 and the admission of air to chamber 38 being controlled by a suitable valve plate 40. l

vaporizer. as thus constructed may be used for light hydrocarbons such as gaso- .lene or the ilieavier kerosene, and to enable it to be thus used l connect to the lower end of the plug 9a a valve casing L t1 having iiilets from opposite sides, as .indicated at 4i). and 43, to which gasolene and kerosene may be respectively piped from a suitable sources (not shown) one or the wher being ut in communication with the fuel chamber y a three way valve 44.

Sometimes the fioat which controls the fuel level needs adjustment. This is ordinarily a ditiicult. matter to determine, and in order to simplify this, I provide a sight tube .45 by which the height of liquid may be determined from mere observation from the exterior, and the degree vof adjustment needed, if any, noted. This adjustment is accomplished by a hinged pin l5 upon which the lio-at level' 6 is ivoted, which hinged piii has projections journaled iii the walls of the chamber, thc hinged pin and projections being eccentric to each other so thatrotation of the hinged piu will eli'ect the vertical adjustment of the tloat lever (3.v Provision made to operate this pin from outside ofthe chamber wall 1^ which in turn raises or lowers the float, thereby regulating the level ol the hydrocarbon. Such provision may consist merely in. a slot iii the end of the pin to receive a screw driver or like device.' By means of this eccentric piu capable of heilig operated from the outside, tliefuel"V level can be changed and located through the glass without the carbureter being taken down, which is quite an important feature.

Having thus described in v invention what I claim is 1. A vaporizer for internal combustion engines comprising a mixing chamber having means for supplying air thereto, `a pair of members of substantially cone shape spaced to admit a film of hydrocarbon tlierebetween, the upper of said members having 'an atoiuizing opening for injecting the combustible fluid into said mixing chamber,

and means for admitting heating tluid to the interior of the lower member, substantially as described.

2. A vaporiaerfor internal combustion engines comprising a mixing chamber hav- ,ing means for supplying air thereto, a pair of members of substantially cone shape spaced to admita tilni of hydrocarbon tterebetweeii, the upper of said members having an atoniizing opening for iiijectiiir the com` bustibie Huid` into said niixingncliambei; a. removable plate r arryiiig the lower member and closing the bottom thereof, and iiduc-I tion and eductioii pipes for heating Huid leading to the space within said lower meinber, substantially as described.

3. A vaporizci' for iiiteiiial\ combustion engines comprising a mixing clhimber having suitable 'air admitting ports, upper and lower elements in the lower part of said mixing chamber spaced to providl a chamber for receiving a thin film of hydrocarbon, said upper elementhaving an opening dis-- charging into the mixing chamber, a needle .valve extending downwardly through said mixing chamber and coperatiiig with said opening, and means for heating the lower element, substantially as described.

,4. In a vaporizer for internal combustion engines, the combination with the mixing chamber, anda, feed nozzle therein, of a cylindrical casing within said chamber and surrounding said nozzle, and having radi` vally arranged air openings above and below I said nozzle, an air valve for regulating said ogenings, a throttle valve above the chamberand controlling the exil: of combustible fluid therefrom, and means whereby said valves may be moved 1n unison and also adjusted independently of each other, substantially as described.

l 5. In a vaporizer for internal combustion engines, the combination with the mixing v chamber and a feed nozzle therein, of a cylindrical casing within said chamber and surrounding said nozzle, and having radially'arranged air openings above and below 1s-f said nozzle, an air valve for regulating said openings, a throttle valve above the chamber .and controlling the exit of combustible fluid valve extending through the top of the vaporizer and provided with a suitable operating handle, a stem for the air valve extending through the stem of the throttle valve and having a similar handle, and a device normally connecting said parts for therefrom, a tubular stem for said' throttle causing them to move in unison, substantially as described.

6. In a. vaporizer, the combination with the mixinfv'eharnber and feed nozzle therein, ofva cylindrical casing having air inlet ports leading to said chamber above and below y the nozzle, an oscillatory air valve controlling said ports, an oscillatory throttle valve controlling the exit of the combustible mixture from said chamber, tubular stems for 'said throttle valve and air valve arranged In testimony whereof, I aix my signature in presence of two witnesses.

ELDEN P. LAMB.

- Witnesses:

JOHN BIRD, A. L. WILEY. 

